hMailServer.Administrator.ucGroup.buttonSelect_Click C# (CSharp) Method

        private void buttonSelect_Click(object sender, EventArgs e)
        {
            formSelectUsers selectUsers = new formSelectUsers(true, 0);

            if (selectUsers.ShowDialog() == DialogResult.OK)
            {
                hMailServer.GroupMembers members = representedObject.Members;

                List<int> listUsers = selectUsers.GetSelectedIDs();

                foreach (int userID in listUsers)
                {
                    hMailServer.GroupMember member = members.Add();
                    member.AccountID = userID;
                    member.Save();

                    Marshal.ReleaseComObject(member);
                }

                Marshal.ReleaseComObject(members);

                ListGroupMembers();
            }
        }